<HTML><HTML>Greetings,            I was called to= service a 5' Young Chang grand piano the other day which was abused at a pa= rty. One guy played the keys harshly while the other put his hand over top o= f the strings above the hammers.            Clearly, the de= livery of the power from the key stroke was not allowed to flow in the manne= r for which it was designed, energizing the string properly (as the string w= as restrained by the "assisting" party of this mahem) and the energy recoile= d back into the wippen. Now, the key when played softly, strikes the string,= but does not fully return to rest on it's hammer pad. Key acts normal on me= zzo-forte and forte blows. Also, I removed the action drawer and depressed t= he key while outside the piano, the key does not cause the hammer to have as= much upward power (wont fly up as hard) as the other keys that are not affe= cted. In other words the power stroke has lost it's 'umph'.              My = guess is that the repetition spring was compressed/ slightly bent. I dont ha= ve a grand action model, which would be instrumental in solving this thing. = Any suggestions? Thanks in advance. Julia Gottchall, Reading, PA  </HTML>